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kobusy [5.1K]
3 years ago
10

21 plus 4x equal 61 what equal 61

Mathematics
1 answer:
kvasek [131]3 years ago
6 0

Answer:

x = 10

Step-by-step explanation:

61 - 21 = 40
40 / 4 = 10
x = 10

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\text{Let the coordinates of AB are }A(-5,-1), \text{ and }B(-2, -6)\\
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\text{let the coordinate of th point C be (x, y), such that}\\
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\text{By the section formula, we know that if P(x,y) lies on a line segment AB}\\
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P=\left ( \frac{mx_2+nx_1}{m+n}, \ \frac{my_2+ny_1}{m+n} \right ).\\
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C=\left ( \frac{3(-2)+7(-5)}{3+7}, \ \frac{3(-6)+7(-1)}{3+7} \right )\\
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\Rightarrow C=\left ( -4.1, \ -2.5 \right )

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